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Windows 7: Usb external drives not recognized

06 Oct 2011   #1
Maguscreed

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 
Usb external drives not recognized

This problem just popped up on both my win 7 machines.
Powered usb external drives (the ones that are based on standard hard drives and plug into the wall) are recognized, but the smaller usb powered ones are not.
The drives work on the same computers when booted xp so it's not the usb itself.
Any ideas?


My System SpecsSystem Spec
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07 Oct 2011   #2
TVeblen

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

Give this a try: Turn OFF "USB Selective Suspend" and test.
USB Selective Suspend - Turn On or Off
My System SpecsSystem Spec
07 Oct 2011   #3
gregrocker

 

Try also updating the Enhanced USB host controller.

Make sure your Win7 updates are current, including any newer optional drivers.

Update then run a full Malwarebytes scan.

Run the SFC -SCANNOW Command

Check the logs for repeat errors and use the System Resources in these troubleshooting steps.

As a last resort before reinstall try a Repair Install
My System SpecsSystem Spec
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 Usb external drives not recognized




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